How to

Update DirectX on Windows 11 and 10 through Windows Update, check your version with DxDiag, get DirectX 11 games running, and fix missing d3dx9 DLL errors.

Open the Control Panel in Windows 10/11 with Win + R and control. Twelve ways, direct applet commands, pinning, View by, and fixes when a policy blocks it.

Install apps on a Windows 11 or Windows 10 laptop or PC from the Microsoft Store, the developer’s site or winget, then update, uninstall and fix install errors.

Adjust screen brightness on Windows 11 and 10 with the Quick Settings slider, laptop keys, Settings or monitor buttons, plus fixes when the slider is missing.

Change the default web browser in Windows 11 or 10 from Settings > Apps > Default apps. Steps for each version, file and link types, and fixes when it reverts.

Disable OneDrive in Windows 11 by pausing sync, stopping it at startup, unlinking the PC, ending folder backup, uninstalling it, or using Group Policy.

Change printer default settings in Windows 11 and 10: pick the default printer, set greyscale, duplex and paper size in Printing preferences, and stop changes.

Access BIOS on your PC with a startup key, the UEFI Firmware Settings option in Windows, or shutdown /r /fw. Brand keys and fixes when the option is missing.

Disable Sticky Keys on Windows 11 or 10 in Settings > Accessibility > Keyboard, stop the Shift-five-times prompt, and fix Sticky Keys that keeps turning on.

Restore tabs in your browser with Ctrl + Shift + T in Edge, Chrome, Firefox and Opera, or Shift-Command-T in Safari. Plus startup settings, history and fixes.

Force restart or hard reset any iPhone: the button sequence for iPhone 8 and later, iPhone 7 and iPhone 6s, plus how a factory reset differs and erases data.